520477 has 4 divisors (see below), whose sum is σ = 522720. Its totient is φ = 518236.

The previous prime is 520451. The next prime is 520529. The reversal of 520477 is 774025.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 520477 - 2⁷ = 520349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 727 + ... + 1252.

It is an arithmetic number, because the mean of its divisors is an integer number (130680).

2⁵²⁰⁴⁷⁷ is an apocalyptic number.

It is an amenable number.

520477 is a deficient number, since it is larger than the sum of its proper divisors (2243).

520477 is a wasteful number, since it uses less digits than its factorization.

520477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2242.

The product of its (nonzero) digits is 1960, while the sum is 25.

The square root of 520477 is about 721.4409192720. The cubic root of 520477 is about 80.4390959417.

The spelling of 520477 in words is "five hundred twenty thousand, four hundred seventy-seven".